Security screw



FIG. 1 is a perspective view of a first screw in accordance with the new design;

FIG. 2 is a top view;

FIG. 3 is a side view;

FIG. 4 is a sectional view along line 4--4 of FIG. 3;

FIG. 5 is a perspective view of a second screw in accordance with the new design;

FIG. 6 is a top view;

FIG. 7 is a side view;

FIG. 8 is a sectional view along line 8--8 of FIG. 7;

FIG. 9 is a perspective view of a third screw in accordance with the new design;

FIG. 10 is a top view;

FIG. 11 is a side view;

FIG. 12 is a sectional view along line 12--12 of FIG. 11;

FIG. 13 is a perspective view of a fourth screw in accordance with the new design;

FIG. 14 is a top view;

FIG. 15 is a side view;

FIG. 16 is a sectional view along line 16--16 of FIG. 15;

FIG. 17 is a perspective view of a fifth screw in accordance with the new design;

FIG. 18 is a top view;

FIG. 19 is a side view;

FIG. 20 is a sectional view along line 20--20 of FIG. 19;

FIG. 21 is a perspective view of a sixth screw in accordance with the new design;

FIG. 22 is a top view;

FIG. 23 is a side view;

FIG. 24 is a sectional view along line 24--24 of FIG. 23;

FIG. 25 is a perspective view of a seventh screw in accordance with the new design;

FIG. 26 is a top view;

FIG. 27 is a side view;

FIG. 28 is a sectional view along line 28--28 of FIG. 27;

FIG. 29 is a perspective view of an eighth screw in accordance with the new design;

FIG. 30 is a top view;

FIG. 31 is a side view; and,

FIG. 32 is a sectional view along line 32--32 of FIG. 31. 

The ornamental design for a security screw, as shown and described. 